NAME: `__builtin_arc_name' will be the user-level name of the builtin.
`ARC_BUILTIN_NAME' will be the internal builtin's id.
N_ARGS: Number of input arguments. If special treatment is needed,
- set to -1 and handle it by hand, see arc.c:arc_expand_builtin().
+ set to -1 and handle it by hand, see arc.cc:arc_expand_builtin().
TYPE: A tree node describing the prototype of the built-in.
- ICODE: Name of attached insn or expander. If special treatment in arc.c
+ ICODE: Name of attached insn or expander. If special treatment in arc.cc
is needed to expand the built-in, use `nothing'.
MASK: CPU selector mask. */